<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>属性选择器</title>
    <style>
        [type]
    </style>
</head>
<body>
    用户名:<input type="text"/> <br/>
    密码:<input type="password"/> <br/>
    邮箱:<input type="email"/> <br/>
</body>
</html>